BS EN 61010-2-033-2012 测量, 控制和实验室用电气设备的安全要求. 家用的和专业用的测量电源电压的手持式万用表和其他手持式表的特殊要求
Safety requirements for electrical equipment for measurement, control, and laboratory use. Particular requirements for hand-held multimeters and other meters, for domestic and professional use, capable of measuring mains voltage